CN214728628U - Automatic collision protection device for automobile - Google Patents

Abstract

The utility model discloses an automatic collision protection device for automobiles, which comprises a mounting frame, wherein a hydraulic damping device is arranged in the mounting frame, a group of induction coils are wound on the hydraulic damping device, wheels are connected at the lower side of the hydraulic damping device, the wheels are in rolling fit with guide rails in the mounting frame, the rear stop block provided with a buffer spring is connected at the rear end of the mounting frame, and the tail part of the hydraulic damping device is in compression fit with the buffer spring when the hydraulic damping device collides and moves backwards; the front end of a telescopic rod of the hydraulic damping device penetrates through the mounting frame to be connected with an air bag containing body provided with an air bag, and the front end of the air bag containing body is connected with a collision body; a group of electromagnetic coils are wound on the mounting frame, each electromagnetic coil is electrically connected with the electromagnetic driving device, the electromagnetic driving device is electrically connected with the signal acquisition and processing module, and the start-stop switch is respectively electrically connected with the signal acquisition and processing module and the automobile electrical system; the audible and visual alarm is electrically connected with the signal acquisition and processing module. The utility model discloses combine dangerous suggestion and collision shock attenuation, have automatic safeguard function, improve the security of traveling.

Description

Automatic collision protection device for automobile

Technical Field

The utility model relates to an automobile safety protection device technical field, concretely relates to automatic collision protection device of car.

Background

Traffic accidents easily occur when an ordinary automobile encounters an emergency in the driving process, so that the automobile body is damaged to cause economic loss, and the life safety of a driver is endangered seriously. In current car buffer stop, generally all be fixed buffer stop, do not possess automation and early warning function, or have automated inspection and early warning function, but do not have the collision avoidance module. The automobile and the driver can not well deal with the emergency situation, and most of the current markets are collision-prevention devices which occupy large space and are heavy or automatic systems which do not have collision-prevention functions, so that the urgent requirements of modern people on the automobile driving safety problem can not be met.

Chinese patent with application number CN202020329718.6 discloses an automobile anti-collision device, which comprises a base, an installation tube, an installation seat, a control box, lamp beads, a spring and a shell, and through the arranged buzzer and lamp beads and the control of the control box, after the automobile touches the anti-collision device, an alarm can be immediately sent out, thereby avoiding the further contact between the automobile and the wall, and protecting the automobile. Although the technical scheme can realize the collision avoidance of the automobile, the anti-collision device can be only used in a scene with small stress, and the early warning function of the anti-collision device is not automatic, so that the anti-collision device has very limited buffering performance and cannot provide powerful protection for the automobile and personnel. The Chinese patent with the application number of CN201921485193.9 discloses an automobile anti-collision device, which comprises a laser ranging module, an ultrasonic ranging module, a single-chip microcomputer control module and an Android device end; the laser ranging module and the ultrasonic ranging module are used for measuring the distance between the automobile and the barrier, and signals and instructions are sent to the Android equipment end through the single chip microcomputer control module to prompt relevant information of a driver. Although the technical scheme can realize automatic distance measurement and alarm, no damping and protecting device is arranged, and if collision occurs, a driver and an automobile can still be injured.

At present, the car prevalence has been very high, but does not appear fine safety coefficient and device in the car safety protection field at present, for this the utility model discloses solve the problem of the automatic anticollision protection of car travel in-process emphatically, improved the security that the car traveled, brought the biggest protection for personnel simultaneously.

SUMMERY OF THE UTILITY MODEL

To the problem that above-mentioned prior art exists, the utility model provides an automatic collision protection device of car combines dangerous suggestion and collision shock attenuation, has automatic safeguard function, improves the security of traveling greatly.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an automatic collision protection device of car, includes the mounting bracket, its characterized in that:

a. the hydraulic damping device is provided with a group of wheels, the wheels are in rolling fit with a guide rail connected in the mounting frame, the rear end of the mounting frame is connected with a rear stop block, the rear stop block is connected with a buffer spring, and when the hydraulic damping device is collided and moves backwards, the tail part of the hydraulic damping device is in compression fit with the buffer spring;

b. the front end of a telescopic rod of the hydraulic damping device penetrates through the mounting frame to be connected with an air bag containing body with an opening, an air bag is arranged in a cavity of the air bag containing body, and the front end of the air bag containing body is connected with a collision body;

c. the mounting frame is surrounded a group of electromagnetic coils arranged along the axis direction of the hydraulic damping device, each electromagnetic coil is electrically connected with the electromagnetic driving device, the electromagnetic driving device is electrically connected with the signal acquisition and processing module, the signal acquisition and processing module is respectively electrically connected with the start-stop switch and the audible and visual alarm, and the start-stop switch is electrically connected with the automobile electrical system.

Further, the hydraulic shock-absorbing device includes: the damping shell comprises a front end opening, a damping shell with a closed rear end, an inner pipe sleeve with a front end opening is connected to the inner side of the rear end of the damping shell, a group of overflow small holes are formed in the inner pipe sleeve, the inner pipe sleeve and the damping shell are communicated with each other through the overflow small holes through gaps of inner and outer walls, the inner wall of the inner pipe sleeve is in clearance fit with a piston head, a telescopic rod is connected to the piston head, a telescopic rod body and an oil seal connected to the damping shell are sequentially matched to form sealing fit and sliding fit, a telescopic spring is arranged between the piston head and the rear end of the damping shell, a pressure storage sponge is arranged between the front end of the damping shell and the inner pipe sleeve, an oil filling hole is formed in the rear end of the damping shell, the oil filling hole is communicated with an inner oil circuit through a check valve, and is connected with an end cap in a threaded mode.

Furthermore, the locating wheel is further connected to the side face of the shock absorption shell, a guide groove matched with the locating wheel is formed in the mounting frame, the tail end of the guide groove is connected with a limiting spring, and a lubricating oil cup communicated with the guide groove is formed in the mounting frame.

Furthermore, the front end of the guide rail is hinged with a blocking plate for limiting the movement of the wheels, the rear side of the blocking plate is connected with a cushion pad, and the front side of the blocking plate is connected with the mounting frame through a damper.

Further, the gasbag holds the body and includes the casing, and the opening part of casing is equipped with a set of cap, and every cap sets gradually first hinge hole and second hinge hole backward by the front end, and first hinge hole is articulated with the connecting rod, and the other end of connecting rod articulates the push rod, and the jam plate that the gasbag held the body front end band hole is worn out to the push rod and with it sliding fit, the second hinge hole is connected with the casing outside, drives the cap through its back migration and opens when outside striking is used in the push rod.

Further, the collision volume includes: the damping device comprises a containing seat with an opening at the upper side, a buffering protection plate is arranged in the containing seat, a group of compression springs is connected in the bottom of the containing seat, each compression spring is connected with a first inclined block through a spring end cover, the first inclined block is mutually matched with a second inclined block fixed on a push rod through inclined surface contact, the front end of the containing seat is connected with a contact body, a group of elastic plates parallel to the front end of the containing seat are arranged in the contact body, the elastic plates are connected through damping springs, and damping buffers are filled in gaps in the contact body; the push rod penetrates through the accommodating seat and extends into the contact body.

Further, the buffer protection plate is a mixture of solid natural rubber and polyvinyl chloride foam.

Further, the damper is a hydraulic damper.

Further, the elastic plate is a rubber plate.

Through the technical scheme, the utility model discloses following beneficial effect has:

1. this device adopts the ultrasonic ranging principle, combines car automatic ranging early warning and anticollision function adoption modularization, has realized that the device is automatic, can provide reaction and operating time for the driver in danger is sent out the police dispatch newspaper in the coming, can launch the collision buffering body contact collision danger source voluntarily simultaneously, collides and cushions in advance, brings the injury for car and personnel when preventing or reducing the collision, improves the safety guarantee.

2. Through the setting of a plurality of groups of interacting coils, the electromagnetic gun principle is utilized, the limited space of the automobile can be fully utilized, the larger acceleration and the higher running speed can be realized in a short distance, and necessary preconditions are provided for buffering and absorbing external impact energy.

3. The inside fluid of hydraulic damping device meets the resistance through the overflow aperture, makes the piston operation slow down, absorbs impact energy simultaneously, and the buffer spring of the collision front end of combination front end and rear end has formed multistage buffering, many hands section buffer mechanism, has improved buffering energy-absorbing effect greatly, brings the injury for car and personnel when preventing to collide.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a hydraulic shock absorbing device;

FIG. 3 is a partial schematic structural view after the hydraulic shock absorbing device is hidden;

FIG. 4 is a schematic view of the structure of the air bag accommodating body;

FIG. 5 is a cross-sectional view A-A of FIG. 4;

FIG. 6 is a schematic view of the first and second swash blocks;

FIG. 7 is a schematic diagram of a signal acquisition processing module;

FIG. 8 is a circuit diagram of an electromagnetic driving device;

FIG. 9 is a schematic diagram of the magnetic action of the electromagnetic coil and the induction coil.

Detailed Description

In order to make the present invention more clearly understood, the following description is made in conjunction with the accompanying drawings to further explain the present invention, and the embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.

As shown in fig. 1, an automatic collision protection device for an automobile is horizontally arranged at collision protection positions of the automobile, such as the front, the rear, the side and the like of the automobile. The method comprises the following steps: the mounting frame 1 is of a rigid structure, the mounting frame 1 is of a semi-closed structure, and the bottom surface, the left side surface and the front end surface of the mounting frame are all formed by combining flat plates. Set up a hydraulic damping device 2 that has the buffering and absorb external impact energy in mounting bracket 1, the whole appearance of hydraulic damping device 2 can be the cuboid also can be for the cylinder, fixes a set of induction coil 21 on hydraulic damping device 2's shell, and every induction coil 21 closed ring is around on hydraulic damping device 2's shell, and distributes a plurality of along hydraulic damping device 2's axis. A set of wheels 3 is connected to the lower part of the hydraulic damper 2, and each wheel 3 can rotate freely. Two parallel guide rails 4 are connected to the bottom surface of the mounting frame 1 through screws, the guide rails 4 are parallel to the axis of the hydraulic damping device 2, the wheels 3 are in rolling fit with the guide rails 4, and the hydraulic damping device 2 is driven to move back and forth when the wheels 3 rotate. A rear stop block 11 is arranged at the rear end of the mounting frame 1 and on an axis extension line of the hydraulic damping device 2, and the rear stop block 11 penetrates through the body of the rear stop block 11 through a group of lengthening bolts and a rod body to be in threaded connection with the bottom surface of the mounting frame 1. The front end face of the rear stop block 11 is provided with a guide rod (not marked) collinear with the axis of the hydraulic damping device 2, and the guide rod penetrates into the buffer spring 12 to form matching connection. When the hydraulic damping device 2 moves backwards in collision, the tail of the hydraulic damping device 2 is in contact with the front end of the buffer spring 12 to form compression fit, and when the tail of the hydraulic damping device 2 is in compression limit with the buffer spring 12, the tail of the hydraulic damping device 2 does not interfere with the guide rod. The front part of the telescopic rod 24b of the hydraulic damping device 2 penetrates out of the mounting frame 1, specifically the front end surface of the mounting frame 1 with holes. The end of the telescopic rod 24b is connected with the air bag containing body 5 through threads, the air bag containing body 5 is cylindrical, symmetrical openings are formed in the upper side and the lower side of the outside, a cavity structure is formed in the inside of the air bag containing body, an air bag 5A is installed in the cavity of the air bag containing body, and the air bag 5A is in the prior art. The airbag housing body 5 is connected to the collision body 6 at its front end surface. A group of electromagnetic coils 13 arranged along the axial direction of the hydraulic damping device 2 are wound on the mounting frame 1, and each electromagnetic coil 13 is closed and has a winding caliber larger than the section size of the hydraulic damping device 2, namely, the electromagnetic coils 13 do not interfere with the hydraulic damping device 2 when the hydraulic damping device 2 moves back and forth. Each electromagnetic coil 13 is electrically connected with the electromagnetic driving device 7, the electromagnetic driving device 7 is electrically connected with the signal acquisition and processing module 8, the signal acquisition and processing module 8 is respectively electrically connected with the audible and visual alarm 10 and the start-stop switch 9, and the start-stop switch 9 is electrically connected with an automobile electrical system.

As shown in fig. 2, the hydraulic shock absorbing device 2 includes: the front end is open, rear end confined shock attenuation shell 22, and shock attenuation shell 22 is the difficult aluminium alloy casing of magnetization of cylindrical. An inner pipe sleeve 23 is connected to the inner side face of the rear end of the shock absorption shell 22, the inner pipe sleeve 23 is coaxial with the shock absorption shell 22, a gap is reserved between the outer wall of the inner pipe sleeve 23 and the inner wall of the shock absorption shell 22, and the gap is communicated with a group of overflow small holes 23a formed in the outer wall of the periphery of the inner pipe sleeve 23. The inner pipe sleeve 23 has a circular cross section and has an inner wall slidably engaged with the piston head 24a, and the piston head 24a is connected to a cylindrical telescopic rod 24 b. On the anterior inner wall of shock attenuation shell 22, connect gradually oil blanket 22a and linear bearing 22b from front to back, oil blanket 22a is the O type sealing washer of three combinations, and linear bearing 22b is the composite material that does not electrically conduct: and (4) a tetrafluoroethylene sleeve. The shaft of the telescoping rod 24b is in sealing engagement with the oil seal 22a and with the linear bearing 22 b. An extension spring 25 is provided between the piston head 24a and the rear end of the damper housing 22, and the rear end of the extension spring 25 is fitted over a guide post 25a, and the guide post 25a is fixed to the rear end surface of the damper housing 22. A pressure storage sponge 26 is arranged between the front end of the shock absorption shell 22 and the inner pipe sleeve 23, an oil filling hole 22c is arranged at the rear end of the shock absorption shell 22, the oil filling hole 22c is communicated with an internal oil circuit through a check valve 22d, and a plug 27 is screwed in the oil filling hole 22 c. A positioning wheel 28 is also connected to the outer side surface of the rear part of the shock absorption shell 22, and the positioning wheel 28 can rotate freely.

For more clearly showing the structural characteristics of the device, fig. 3 is a partial structural schematic view after the hydraulic shock absorbing device is hidden, and as shown in fig. 3, a guide groove 14 matched with the positioning wheel 28 is arranged on the left side plate of the mounting frame 1, the guide groove 14 is parallel to the axis of the hydraulic shock absorbing device 2, and the cross section of the guide groove is rectangular. The overall length of the guide grooves 14 is slightly greater than the limit of movement of the hydraulic damping device 2. The tail end of the guide groove 14 is connected with a limiting spring 15, a lubricating oil cup 16 is installed on the installation frame 1, and the lubricating oil cup 16 is communicated with the guide groove 14 through a small hole and used for dynamic lubrication of wheels and grooves.

As shown in a partially enlarged view in fig. 3, the front end of the guide rail 4 is hinged with a blocking plate 17 for limiting the movement of the wheel 3, and a cushion 17a is connected to the rear side of the blocking plate 17 for limiting the wheel 3 and reducing the impact energy to the mounting frame 1. The front side of the barrier plate 17 is connected to the front panel of the mounting frame 1 via a damper 17 b. The cushion pad 17a is a rubber pad. The damper 17b is a hydraulic damper, and under the impact of the wheel 3, the arresting plate 17 can slightly swing around a hinge point, so that after impact energy is buffered and absorbed by the damper 17b, the residual energy is finally transmitted to the mounting frame 1.

As shown in fig. 4 and 5, the airbag housing 5 includes a cylindrical housing 51, two housing covers 52 are respectively disposed at two upper and lower openings of the housing 51, each housing cover 52 is sequentially provided with a first hinge hole 53 and a second hinge hole 54 from the front end to the rear end, the first hinge hole 53 is hinged to a connecting rod 55 through a pin hole, the other end of the connecting rod 55 is hinged to a push rod 56, the push rod 56 penetrates through and is slidably engaged with a blocking plate 57 with a hole at the front end of the airbag housing 5, and the hole of the blocking plate 57 also has a guiding function of the push rod 56. The second hinge hole 54 is hinged to a hinge support plate 51a provided outside the housing 51 through a pin hole, and the housing cover 52 is opened by the rearward movement thereof when an external impact acts on the push rod 56. The push rod 56 is placed forward in the cushion body 6. The collision body 6 includes: an accommodating seat 61 with an upper opening, a hole for the push rod 56 to pass through is arranged on the accommodating seat 61, a buffer protection plate 62 is arranged in the accommodating seat, the buffer protection plate 62 is a plate made of a mixture of solid natural rubber and polyvinyl chloride foam plastic, and an avoiding groove is arranged at the lower part of the buffer protection plate 62. Two compression springs 63 are connected in the bottom of the accommodating seat 61, a spring end cover 67 is installed on each compression spring 63, the spring end covers 67 are in contact with the lower bottom of the buffer protection plate 62, the two spring end covers 67 are connected through a connecting plate 68, a first inclined block 64 is connected in the middle of the connecting plate 68 and located under the push rod 56, the first inclined block 64 is wedge-shaped, the first inclined block 64 is matched with a second inclined block 65 fixed on the push rod 56 through inclined surface contact, the front end of the accommodating seat 61 is connected with a contact body 66, two elastic plates 66a parallel to the front end of the accommodating seat 61 are arranged in the contact body 66, the elastic plates 66a are rubber plates, the two elastic plates 66a are connected through a damping spring 66b, a damping buffer 66c is filled in a gap in the collision body 6, and the push rod 56 penetrates into the contact body 66. When an external impact acts on the contact body 66, the shock absorbing bumper 66c, the elastic plate 66a and the shock absorbing spring 66b in the contact body 66 are deformed under force to directly or indirectly act on the push rod 56 to displace it rearward, and the second inclined block 65 on the push rod 56 also displaces rearward.

As shown in fig. 6, the second inclined block 65 is composed of a first horizontal section a, an inclined pointed section b and a second horizontal section c, and the matched first inclined block 64 appears in the sections a, b and c during the backward movement: the section a is a limiting section, and the compression spring 63 is in a micro-compression or non-stress state under the action of the spring end cover 67; as the second inclined block 65 moves backward into the section b, the first inclined block 64 makes the first inclined block 64 move downward by interacting with an inclined surface on one side of the second inclined block 65, that is, the compression spring 63 is in a compressed state, and then, the first inclined block 64 makes the first inclined block 64 move upward by interacting with another inclined surface of the second inclined block 65, that is, the compression spring 63 is converted from the compressed state into a recovery deformation state, that is, the compression spring is bounced on the upper side; as the second ramp block 65 moves back into section c: the first inclined block 64 is limited on the second horizontal section c, and the compression spring 63 recovers deformation and prevents the whole body from being ejected out; the position of the section a is lower than that of the section c in the view, so that the compression spring 63 has enough stroke and space during the process of springing up. In order to prevent the compression spring 63 from greatly deviating during the compression and extension processes, a cylindrical guide body 69 is arranged at the bottom of the accommodating seat 61, and the shaft of the guide body 69 is matched with the inner ring of the compression spring 63. All the above processes are generated at the moment of collision, the speed is high, the time is short, and the compression spring 63 is upwards bounced to act on the buffer protection plate 62 and is bounced out of the accommodating seat 61 for effective protection.

As shown in fig. 7, the signal acquisition processing module 8 includes an ultrasonic transmitting circuit module, an ultrasonic receiving circuit module and a single chip microcomputer control system, and the ultrasonic transmitting circuit module and the ultrasonic receiving circuit module are respectively electrically connected to the single chip microcomputer control system. The electromagnetic driving device 7 and the audible and visual alarm 10 are respectively electrically connected with the singlechip control system. The electrical modules are all in the prior art and have a split type and an integrated type. In this embodiment, an integrated product of the above modules is used, and an ultrasonic control sensor manufactured by HTW corporation, model number EFR-40RS15B 1.

As shown in fig. 8, in the electromagnetic driving device 7, the electrical device includes a power module 71, an inverter boost rectifier module 72, an energy storage capacitor 73, a control switch 74, an electromagnetic relay 75 and a diode 76, and the power module 71 is the utility model discloses utilize the energy supply device of "electromagnetic gun" principle, the dc power supplies such as the battery of usable car itself supply power. The inverter boost rectifier module 72 mainly boosts the dc power supply to make the energy storage capacitor 73 obtain electric energy. The method comprises the following specific working steps: the control switch 74 is closed to enable the power supply module 71 to charge the energy storage capacitor 73, after the charging is finished, the control switch 74 is switched off, when an electric signal generated by a singlechip control system in the signal acquisition and processing module 8 is transmitted into the electromagnetic driving device 7, the electric signal drives the electromagnetic relay 75 to work, a discharging loop is closed, the energy storage capacitor 73 is quickly electrified into the closed and surrounding electromagnetic coil 13 on the mounting frame 1, a strong change current generated instantaneously by an electromagnetic theory can generate a magnetic field in a space where the closed and surrounding electromagnetic coil 13 is located, the direction of the magnetic field generated by ampere rule is shown in fig. 9, the magnetic field in the electromagnetic coil 13 points to the right from the left, namely, the magnetic field is equivalent to a magnet in the electromagnetic coil 13, the left side of the magnet is an S level, the right side of the magnet is an N level, and the suddenly generated magnetic field can generate an induction magnetic field in the induction coil 12 of the hydraulic damping device 2, the lenz law that the direction of the induced magnetic field points to the left from the right is equivalent to that a magnet is arranged in the induction coil 12, the right side of the magnet is the S pole, and the left side of the magnet is the N level, so that obviously, the hydraulic damping device 2 accelerates to move to the right under the action of magnetic field force due to the fact that the magnets have the property that like poles repel each other. If a plurality of closed-loop solenoid coils 13 are arranged on the mounting frame 1 and the energizing sequence of each solenoid coil 13 is controlled in turn, the induction coil 12 is accelerated by the same-direction acting force F for a plurality of times, and the high-speed ejection of the hydraulic damper device 2 on the guide rail 4 can be realized.

The utility model discloses work flow:

(1) signal start-up: after the vehicle is loaded, the start-stop switch 9 in the vehicle is opened, the whole device is electrified to start running, and the signal acquisition and processing module 8 starts working.

(2) Distance detection: ultrasonic wave transmitting circuit module in signal acquisition processing module 8 externally launches the ultrasonic wave, and at the same time single chip microcomputer control system produces rectangular pulse signal and begins the count, and the ultrasonic wave is reflected back after meetting the place ahead barrier, is received by ultrasonic wave receiving circuit module, and the echo signal that receives when single chip microcomputer control system begins to stop the count and produce outside interrupt, through car and barrier distance formula: d =1/2 ∙ V ∙ T =1/2 ∙ V ∙ N ∙ T _0 (in the formula, D-measuring distance, V-sound wave propagation speed, T-sound wave round-trip time, pulse number counted by an N-microcontroller, T _ 0-machine period of a single chip microcomputer) when the single chip microcomputer control system calculates that the automobile approaches an obstacle and is not less than the set dangerous distance, the audible and visual alarm 10 starts to work to immediately send out an alarm to remind a driver to brake or take other safety measures; when the singlechip control system calculates that the distance between the automobile obstacles is smaller than the set dangerous distance, the singlechip control system immediately sends an electric signal to the electromagnetic driving device 2.

(3) Power transmission: the signal transmission that signal acquisition processing module 8 produced is to electromagnetic drive device 2 in, electromagnetic drive device 2 is with closed solenoid 13 interior wire circular on the mounting bracket 1 circular to produce alternating electric field in the space, by the electromagnetism theory, fixed induction coil 12 on the hydraulic damping device 2 will produce induced-current, thereby the electromagnetic force of production will promote hydraulic damping device 2 and pass through wheel 3 and move on guide rail 4, and pop out fast. The barrier plate 17 is provided as a protection means for the hydraulic damper 2 against the mounting frame 1, and the positioning wheel 28 and the guide groove 14 are provided as a protection means for preventing the hydraulic damper 2 from shifting or overturning.

(4) Damping and buffering: when the air bag accommodating body 5 and the collision body 6 are impacted by an obstacle, the contact collision part is firstly a contact body 66, the contact body 66 firstly buffers and absorbs partial energy, the buffer protection plate 62 ejects and intercepts collision splashed objects, then the cover 52 of the air bag accommodating body 5 is triggered to open, the air bag 5A inflates to work, the residual energy is buffered and absorbed again, the automobile can be protected in a large area, the protection area is enlarged, the splashed objects ejected during collision are prevented from hurting and damaging the automobile, the collision energy is transmitted to the hydraulic shock absorption device 2 through the air bag accommodating body 5 to carry out buffering and energy absorption for three times, namely, the piston head 24a extrudes the hydraulic oil in the automobile, the hydraulic oil flows through the overflow small hole 23a to carry out damping and energy absorption, meanwhile, the telescopic spring 25 in the automobile can also absorb partial energy, meanwhile, the hydraulic shock absorption device 2 moves backwards to contact with the buffer spring 12 to form compression fit, the energy is buffered and absorbed again, and finally the possibly remaining energy is transferred to the rear stop 11. The whole shock absorption and buffering process is finished.

The beneficial effect of this device:

1. this device adopts the ultrasonic ranging principle, carries out real-time detection and reminds navigating mate to dodge with the dangerous source that probably appears, can have in time feedback and carry out initiative protection to definite dangerous source, utilizes "electromagnetism big gun" principle, can realize in limited automobile space that hydraulic damping device obtains great acceleration and functioning speed in time of a period, the short distance, initiatively protects fast, has avoided the great loss because of the reaction slowly causes. In addition, the device occupies small space, is conveniently integrated on the automobile body, and does not influence the appearance of the automobile.

2. The device adopts a multi-stage and multi-structure buffering and energy-absorbing means, the shock absorption buffer also absorbs energy through the buffering of the elastic plate and the shock absorption spring during contact collision, and then the large-area effective protection is carried out through the work of the air bag, and the buffering and energy absorption at different positions and different time periods are realized through hydraulic oil damping absorption and spring shock absorption, so that the personal safety is fully protected, and the automobile loss is reduced.

3. This device has still been equipped with the spacing protect function who prevents toppling and dash out track 4 and mounting bracket 1 to hydraulic damping device 2, is equipped with the cap 52 that opens and shuts as the protective body to gasbag 5A, prevents that the inefficacy condition from appearing in the gasbag 5A is punctured to outside article, makes whole device operation more reliable, stable and safe.

Claims (9)

1. The utility model provides an automatic collision protection device of car, includes mounting bracket (1), its characterized in that:

a. the hydraulic shock absorption device is characterized in that a hydraulic shock absorption device (2) capable of buffering and absorbing external impact energy is arranged in the mounting frame (1), the hydraulic shock absorption device (2) surrounds a group of induction coils (21) along the axis direction, a group of wheels (3) are arranged on the hydraulic shock absorption device (2), the wheels (3) are in rolling fit with a guide rail (4) connected in the mounting frame (1), a rear stop block (11) is connected to the rear end of the mounting frame (1), a buffer spring (12) is connected to the rear stop block (11), and when the hydraulic shock absorption device (2) collides and moves backwards, the tail of the hydraulic shock absorption device (2) is in compression fit with the buffer spring (12);

b. the front end of a telescopic rod (24 b) of the hydraulic damping device (2) penetrates out of the mounting frame (1) to be connected with an air bag containing body (5) with an opening, an air bag (5A) is installed in a cavity of the air bag containing body (5), and the front end of the air bag containing body (5) is connected with a collision body (6);

c. a set of electromagnetic coils (13) arranged along the axis direction of the hydraulic damping device (2) are arranged on the mounting frame (1) in an encircling mode, each electromagnetic coil (13) is electrically connected with the electromagnetic driving device (7), the electromagnetic driving device (7) is electrically connected with the signal acquisition and processing module (8), the signal acquisition and processing module (8) is respectively electrically connected with the start-stop switch (9) and the acousto-optic alarm (10), and the start-stop switch (9) is electrically connected with the automobile electrical system.

2. An automatic collision protection apparatus for a vehicle according to claim 1, wherein: the hydraulic damping device (2) comprises: a shock absorption shell (22) with an opening at the front end and a closed rear end, wherein the inner side of the rear end of the shock absorption shell (22) is connected with an inner pipe sleeve (23) with an opening at the front end, the inner pipe sleeve (23) is provided with a group of overflow small holes (23 a), the inner pipe sleeve (23) and the shock absorption shell (22) are communicated with each other through the overflow small holes (23 a) through a gap between the inner wall and the outer wall, the inner wall of the inner pipe sleeve (23) is in clearance fit with a piston head (24 a), the piston head (24 a) is connected with a telescopic rod (24 b), the rod body of the telescopic rod (24 b), an oil seal (22 a) and a linear bearing (22 b) which are connected on the shock absorption shell (22) are sequentially and correspondingly in sealed fit and sliding fit, a telescopic spring (25) is arranged between the piston head (24 a) and the rear end of the shock absorption shell (22), a pressure storage sponge (26) is arranged between the front end of the shock absorption shell (22) and the inner pipe sleeve (23), the rear end of the shock absorption shell (22) is provided with an oil filling hole (22 c), the oil filling hole (22 c) is communicated with the internal oil way through a check valve (22 d), and the oil filling hole (22 c) is screwed with a plug (27).

3. An automatic collision protection apparatus for a vehicle according to claim 2, wherein: locating wheel (28) are still connected to shock attenuation shell (22) side, be equipped with on mounting bracket (1) with locating wheel (28) complex guide way (14), guide way (14) end connection limiting spring (15), be equipped with on mounting bracket (1) with lubricant cup (16) of guide way (14) intercommunication.

4. An automatic collision protection apparatus for a vehicle according to claim 1, wherein: the front end of the guide rail (4) is hinged with a blocking plate (17) used for limiting the movement of the wheels (3), the rear side of the blocking plate (17) is connected with a cushion pad (17a), and the front side of the blocking plate (17) is connected with the mounting frame (1) through a damper (17 b).

5. An automatic collision protection apparatus for a vehicle according to claim 1, wherein: the air bag accommodating body (5) comprises a shell (51), a group of shell covers (52) are arranged at an opening of the shell (51), each shell cover (52) is provided with a first hinge hole (53) and a second hinge hole (54) from the front end to the back in sequence, the first hinge hole (53) is hinged to a connecting rod (55), the other end of the connecting rod (55) is hinged to a push rod (56), the push rod (56) penetrates through a blocking plate (57) with a hole in the front end of the air bag accommodating body (5) and is in sliding fit with the blocking plate, the second hinge hole (54) is connected with the outer side of the shell (51), and when external impact is applied to the push rod (56), the shell covers (52) are driven to be opened through backward movement of the push rod.

6. An automatic collision protection apparatus for a vehicle according to claim 1, wherein: the collision body (6) includes: the shock absorption device comprises an accommodating seat (61) with an opening at the upper side, a buffer protection plate (62) is installed in the accommodating seat (61), a group of compression springs (63) are connected in the bottom of the accommodating seat (61), each compression spring (63) is connected with a first inclined block (64) through a spring end cover (67), the first inclined blocks (64) are matched with second inclined blocks (65) fixed on a push rod (56) through inclined surface contact, the front end of the accommodating seat (61) is connected with a contact body (66), a group of elastic plates (66 a) parallel to the front end of the accommodating seat (61) are arranged in the contact body (66), the elastic plates (66 a) are connected through damping springs (66 b), and a shock absorption buffer (66 c) is filled in a gap in a collision body (6);

the push rod (56) extends through the receptacle (61) into the contact body (66).

7. An automatic collision protection apparatus for a vehicle according to claim 6, wherein: the buffer protection plate (62) is a mixture of solid natural rubber and polyvinyl chloride foam.

8. An automatic collision protection apparatus for a vehicle according to claim 4, wherein: the damper (17 b) is a hydraulic damper.

9. An automatic collision protection apparatus for a vehicle according to claim 6, wherein: the elastic plate (66 a) is a rubber plate.

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